Can Transabdominal Cervical Length Measurement Exclude Short Cervix?
Am J Perinatol
; 33(5): 473-9, 2016 Apr.
Article
em En
| MEDLINE
| ID: mdl-26523740
ABSTRACT
OBJECTIVE:
This study aims to determine if transabdominal (TA) cervical length may be used to rule out a short cervix on transvaginal (TV) ultrasound. STUDYDESIGN:
We conducted a prospective cohort study of women undergoing routine anatomic survey at 17 to 23 weeks gestation. TA and TV cervical length measurements were obtained in each patient. A short cervix was defined as TV cervical length < 30 mm. Predictive characteristics were calculated for different cutoff values of TA cervical length.RESULTS:
There were 404 patients enrolled, a TA cervical length could not be obtained in 83 women (20.6%) and 318 women had both TA and TV measurements. Of those, 14 (4.4%) had a TV cervical length < 30 mm. TA cervical length measurement ≥ 35 mm excluded the possibility of TV cervical length < 30 mm (negative predictive value, 99.5%; 95% confidence interval [CI], 97.4; 100%). In our cohort, 67.6% (95% CI, 62.2; 72.7%) of TV ultrasounds could have been avoided using a TA cervical length cutoff of ≥ 5 mm.CONCLUSION:
ATA cervical length of at least 35 mm excludes a short cervix of < 30 mm. While TA cervical length screening may not be feasible in 1 in 5 women, it may be used to decrease the burden of universal TV cervical length screening.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Colo do Útero
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Medida do Comprimento Cervical
Tipo de estudo:
Diagnostic_studies
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Etiology_studies
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Incidence_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adult
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Female
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Humans
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Pregnancy
Idioma:
En
Revista:
Am J Perinatol
Ano de publicação:
2016
Tipo de documento:
Article